Purpose of PADI DSAT Trimix Course

The PADI Trimix Diver course is intended to extend the depth range of technical divers already trained and qualified to use air, enriched air and oxygen for technical decompression dives beyond 50 metres/165 feet. Diving with trimix is the outer edge of tec diving – the maximum depth for using this technology has yet to be defined.

This course is for Tec 50 or Tec Trimix 65 (or those holding a qualifying certification from another training organization). The course extends your depth range capabilities by training you to use trimix (a blend of helium, oxygen and nitrogen).

You will
 Plan and execute between three to eight dives (depending upon whether you enter the course as a Tec 50 diver or Tec Trimix 65 diver) using EANX and trimix blends
• Use decompression software to create custom dive tables and dive plans
• Make training dives as deep as 90 metres/300feet

Course overview

You will
 Plan and execute between three to eight dives (depending upon whether you enter the course as a Tec 50 diver or Tec Trimix 65 diver) using EANX and trimix blends
• Use decompression software to create custom dive tables and dive plans
• Make training dives as deep as 90 metres/300feet

Use two or more cylinders of decompression gas with one up to 100 percent oxygen to add conservatism to the required decompression.

Equipment Requirements

  • Each diver will be required to have a complete set of personal dive equipment, including:
  • Double cylinders with a minimum of 121L/70 cubic feet each, with isolator manifold Primary & secondary regulators for doubles or single with appropriate valve
  • One with a seven foot hose for air sharing
  • One with an SPG
  • 2 or more deco tanks with regulator, SPG & staging kit – properly labeled
  • Back-up deco gas as required
  • BC, back plate & harness (dual bladder or dual wings unless drysuit diving)
  • Dive computer (single or multi-gas), and either back-up computer or timer & depth gauge
  • Back-up decompression information (computer, dive tables, etc.)
  • Exposure protection (dry suit use requires prior dry suit diving experience)
  • Weight system (if needed)
  • Lights as necessary, including primary and backup
  • Jon line (for current diving environments)
  • Safety reel and lift bag or DSMB. A suitable DSMB has sufficient buoyancy to help steady a diver during deco
  • Inflatable signal tube, whistle and/or other visual and audible surface signaling device
  • (2) Slates, (1 wrist-type)
  • Compass
  • Z-knife and back-up cutting device
  • Spare clips, pull-ties, tank wrap bands & other rigging accessories
  • Back-up mask (optional)
  • Lift bag (100lbs min)